Finishing eoll



I (No Model.) 2 Sheets-"Sheet 1.

J. HALL. FINISHING ROLL.

No.. 599,469 Patented Feb. 22, 1898.

(No Model'.) 2 Sheets-Shet 2.

J. HALL. FINISHING ROLL.

No. 599,469. Patented Feb. 22, 1898.

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JOSEPH HALL, OF LEEDS, ENGLAND.

FINISHING ROLL.

SPECIFICATION forming part of Letters Patent No. 599,469, dated February22, 18984. Application filed July 2, 1897 Serial No. 643,217- (Nomodel.) Patented in England February 25, 1896,1 T0. 4,199.

To all whom it may concern:

Be it known that I, JOSEPH HALL, a subject of the Queen of GreatBritain, residing at Leeds, in the county of York, England, haveinvented certain new and useful Improvements in Finishing Rolls orCylinders, (for which I have obtained Letters Patent of Great Britain,No. 4,199, dated February 25, 1806,) of which the followingis aspecification.

My invention has relation to a roll or cylinder adapted for use infieshing, setting out, shaving, or analogous leather dressing andfinishing machines, and in such connection it relates particularlyto theconstruction and arrangement of such a roll or cylinder.

My present invention has for its object to provide in a working roll orcylinder an arrangement of blades whereby the tension on the hide orskin during the operation of the roll or cylinder is lessened by causingthe roll or cylinder to take hold of the hide or skin at many points,the hide being thereby better supported, more steadily worked, havingless tendency to tear, and the finished skin or hide having theappearance of being worked by hand.

To this end my invention consists in a roll or cylinder having twoseries of helical main blades oppositely arranged and abutting at two ormore points, there being arranged between the main blades short threadsor blades in two or more series, the angle or trend of the short bladesbeing different from the angle or trend of the short blades of the otherseries and from the angle or trend of the main helical blades.

My invention further consists in a roll or cylinder constructed andarranged in substantially the manner hereinafter described and claimed.

The nature and scope of my invention will be more fully understood fromthe following description, taken in connection with the accompanyingdrawings, forming part hereof, in which Figure 1 is atop or plan View ofa finishing roll or cylinder embodying main features of my invention,the main blades abutting alternately in the center and to one sidethereof. Fig. 2 is a diagrammatic view illustrating the arrangement ofthe blades of the cylinder when projected upon a flat surface. Fig. 3 isa diagram illustrating the angle or trend of the main blades and thevarying angles or trends of the short threads or blades. Fig. 4 is a topor plan View of a modified form of finishing roll or cylinder, in whichthe main blades abut alternately at three points in the center and tothe right and left of the center; and Fig. 5 is a diagrammatic view ofthe arrangement of blades of the cylinder shown in Fig. 4 when projectedupon a flat surface.

Referring to the drawings, A represents the base of the cylinder orroll, which is suitably grooved or recessed to receive and retain themain spiral blades a and a as well as the short threads or blades 0, cl,e, f, and h. The main blades a and a are oppositely coiled and maybearranged as shown in Figs. 1 and 2that is to say, the blade to abutsagainst the blade a at the longitudinal center line a whereas the bladesto abut or terminate against the blades a at the line a to the right ofthe center line (1?. In Figs. 4 and 5 the blades to and a abut at threepoints-one in the center line a one in the line a to the right of theline a and the third in the line a to the left of the center line a Inboth forms of cylinder or roll there are provided, by preference, fiveseries of short blades or threads, (marked,respectively,b,c,d, e, andf.) The short blades of one series are arranged at a certain angle withthe main blades a and a, which differs from the angle at which the mainblades a and a are arranged, and also differs from the angles made bythe short blades of all the other series. This will be more readilyunderstood from an inspection of Fig. 3, in which the angles of the mainblades and short blades are illustrated in diagram. Thus a g and a grepresent the trend of the main blades a and a, and b g, c g, d g, e g,and f g the varying angles made by the respective series I), c, d, c,and f of the short blades. These short blades do not abut against eachother, but abut at varying angles against the main blades a and a,substantially as shown in Figs. 2 and 5. The series of blades 1), c, d,e, and f may be arranged as shown in the drawingsthat is to say, theseries h followed bye, then by c,

then by cl, and then by for they may be arranged consecutively, so thatthe series I) is followed by the series 0, cl, 6, and f.

The operation of my improved roll or cylinder may be explained asfollows: The main blades or and a spread the hide or skin generally fromthe center to the ends in one trend or direction. The five series ofshort blades take up the work in successive trends or directions,following each other at angles differing from that of the main blades,as Well as from the angles of the other series of short blades. Thehide, skin, or leather is thereby more effectually set out, cleansed,spread, and softened. The crossing orabutment of the main blades at twoor more points, together with the abutment of the short blades with themain blades at or near the center of the cylinder, serves to prevent theformation of ridges or scratches at or near the center of the skin orleather and also forms on the cylinder several supports for the skin orleather, effectually preventing tearing or riffling during the treatmentof the skin or leather.

Having thus described the nature and ob ject of my invention, what Iclaim as new, and desire to secure by Letters Patent, is-

1. In a finishing roll or cylinder, two series of oppositely-arrangedhelical main blades, and two or more series of short threads or blades,each series whereof being arranged at an angle varying from the angle ofthe main blades and from the angle of the other series of short blades,said short blades abutting against the main blades, substantially as andfor the purposes described.

2. In a finishing roll or cylinder, two series of oppositely-arrangedhelical main blades abutting against each other at two or more points,one of which is in the center line of the cylinder, and two or moreseries of short threads or blades, each series whereof being arranged atan angle varying from the angle of the main blades and from the angle ofthe other series of short blades, said main blades abutting against themain blades but not against each other, substantially as and for thepurposes described.

In testimony whereof I have hereunto set my signature in the presence oftwo subscribing witnesses.

JOSEPH HALL.

Witnesses:

- E. L. J. HALL, A. H. HEINS.

